LINAC2016 - List of Authors (Palmieri, A.)

Paper	Title	Page
THPLR049	Tuning the IFMIF 5MeV RFQ Accelerator	969
	A. Palmieri, F. Grespan, A. Pisent INFN/LNL, Legnaro (PD), Italy
	In order to allow proper operation of the IFMIF RFQ, it is necessary to perform a campaign of RF measurements on the cavity aimed, on one hand, at determining the basic RF parameters (frequency, Q0, etc.), on the other hand at verifying the fulfilment of the voltage law within the specified admitted range (±2% target value, ±4% acceptance value) of any of the perturbative components upon successive tuner settings as predicted by the tuner algorithm. These measurements also involve the determination of the proper depth of the end plates and the positioning and length of the Dipole Stabilizers (if any). In this contribution the tuning procedure and the results of such measurements will be presented for the case of the IFMIF RFQ will be described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR049
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THPLR050	IFMIF RFQ Module Characterization via Mechanical and RF Measurements	972
	L. Ferrari, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy R. Dima, A. Pepato, A. Prevedello, E. Udup INFN- Sez. di Padova, Padova, Italy
	The RFQ of the IFMIF/EVEDA project is a 9.9 m long cavity able to accelerate a 130 mA deuteron beam from the input energy of 100 keV to the output energy of 5 MeV. Such RFQ operates at the frequency of 175 MHz and is composed of 18 mechanical modules approximately 0.55 m long each. The RFQ realization involves the I.N.F.N. Sections of Padova, Torino and Bologna, as well as the Legnaro National Laboratories (L.N.L.). The metrological measurements via CMM (Coordinate Measuring Machine) provided to be a very effective tool both for quality controls along the RFQ production phases and in the reconstruction of the cavity geometric profile for each RFQ module. The scans in the most sensitive regions with respect to RF frequency, such as modulation, tips, base-vane width and vessel height provided the values of the cavity deviations from nominal geometry to be compared with design physic-driven tolerances and with RF measurements. Moreover, the comparison between mechanical and RF measurements suggests a methodology for the geometric reconstruction of the cavity axis and determines the final machining of the end surfaces of each module in view of the coupling with the adjacent ones. In this paper a description of the meteorological procedures and tests and of the RFQ along its production and assembly phases will be described.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR050
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THPLR051	High-Power RF Test of IFMIF-EVEDA RFQ at INFN-LNL	975
	E. Fagotti, L. Antoniazzi, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri INFN/LNL, Legnaro (PD), Italy
	A partial test at full power and CW duty cycle will be performed at INFN-LNL on the last elements of the IFMIF RFQ, approximately two meters of structure, using a specific electromagnetic boundary element on the low energy end. The aim is to reach, in the RFQ coupled with its power coupler system, after an adequate period of conditioning, cw operation at nominal field level (132 kV between electrodes) for at least two hours without breakdown. The description of the experimental setup and procedure, as well as the main results of the conditioning procedure will be reported in this paper.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR051
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Paper

Title

Page

Tuning the IFMIF 5MeV RFQ Accelerator

969

A. Palmieri, F. Grespan, A. Pisent
INFN/LNL, Legnaro (PD), Italy

In order to allow proper operation of the IFMIF RFQ, it is necessary to perform a campaign of RF measurements on the cavity aimed, on one hand, at determining the basic RF parameters (frequency, Q0, etc.), on the other hand at verifying the fulfilment of the voltage law within the specified admitted range (±2% target value, ±4% acceptance value) of any of the perturbative components upon successive tuner settings as predicted by the tuner algorithm. These measurements also involve the determination of the proper depth of the end plates and the positioning and length of the Dipole Stabilizers (if any). In this contribution the tuning procedure and the results of such measurements will be presented for the case of the IFMIF RFQ will be described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR049

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPLR050

IFMIF RFQ Module Characterization via Mechanical and RF Measurements

972

L. Ferrari, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy
R. Dima, A. Pepato, A. Prevedello, E. Udup
INFN- Sez. di Padova, Padova, Italy

The RFQ of the IFMIF/EVEDA project is a 9.9 m long cavity able to accelerate a 130 mA deuteron beam from the input energy of 100 keV to the output energy of 5 MeV. Such RFQ operates at the frequency of 175 MHz and is composed of 18 mechanical modules approximately 0.55 m long each. The RFQ realization involves the I.N.F.N. Sections of Padova, Torino and Bologna, as well as the Legnaro National Laboratories (L.N.L.). The metrological measurements via CMM (Coordinate Measuring Machine) provided to be a very effective tool both for quality controls along the RFQ production phases and in the reconstruction of the cavity geometric profile for each RFQ module. The scans in the most sensitive regions with respect to RF frequency, such as modulation, tips, base-vane width and vessel height provided the values of the cavity deviations from nominal geometry to be compared with design physic-driven tolerances and with RF measurements. Moreover, the comparison between mechanical and RF measurements suggests a methodology for the geometric reconstruction of the cavity axis and determines the final machining of the end surfaces of each module in view of the coupling with the adjacent ones. In this paper a description of the meteorological procedures and tests and of the RFQ along its production and assembly phases will be described.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR050

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPLR051

High-Power RF Test of IFMIF-EVEDA RFQ at INFN-LNL

975

E. Fagotti, L. Antoniazzi, M.G. Giacchini, F. Grespan, M. Montis, A. Palmieri
INFN/LNL, Legnaro (PD), Italy

A partial test at full power and CW duty cycle will be performed at INFN-LNL on the last elements of the IFMIF RFQ, approximately two meters of structure, using a specific electromagnetic boundary element on the low energy end. The aim is to reach, in the RFQ coupled with its power coupler system, after an adequate period of conditioning, cw operation at nominal field level (132 kV between electrodes) for at least two hours without breakdown. The description of the experimental setup and procedure, as well as the main results of the conditioning procedure will be reported in this paper.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2016-THPLR051

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)